Table 1.
The expected segregation ratio (presence : absence) of a dominant marker in a testcross of hexaploid for three hypothetical polyploidy types (Jones 1967). A and a represent dominant and recessive alleles, respectively
| Marker dose | Autohexaploid (hexasomic) | Tetradiploid (tetradisomic, tetrasomic, disomic) | Allohexaploid (disomic) |
|---|---|---|---|
| Simplex | Aaaaaa 1 : 1 | Aa aaaa 1 : 1 | Aa aa aa 1 : 1 |
| aaaa Aa 1 : 1 | |||
| Duplex | AAaaaa 4 : 1 | AAaa aa 5 : 1a | Aa Aa aa 3 : 1 |
| Aaaa Aa 3 : 1b | AA aa aa 1 : 0 | ||
| aaaa AA 1 : 0c | |||
| Triplex | AAAaaa 19 : 1 | AAAa aa 1 : 0 | Aa Aa Aa 7 : 1 |
| AAaa Aa 11 : 1 | AA Aa aa 1 : 0 | ||
| Aaaa AA 1 : 0 | |||
| Quadruplex | AAAAaa 1 : 0 | AAAA aa 1 : 0 | AA Aa Aa 1 : 0 |
a
tetrasomic inheritance.
b
tetradisomic inheritance.
c
disomic inheritance.